I personally would never "end up with" a scatter-bred dog
I would really do my research on his immediate ancestors and determine if that dog is a "fluke" ... or if there were family members (brothers/sisters/mother+mates/sire+mates/ etc.) that carried those characteristics also.
If so, I would purchase/breed to those family members with those tratis; if not, I wouldn't personally waste my time breeding the dog and raising its offspring.
Jack